<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>04 jQuery详细使用</title>
  <script src="../../Resource/外部库/jquery-3.2.1.js"></script>
</head>
<body>
<button id="btn" value="按钮">按钮</button>
<script>
  $(function () {
//    var $ = "我是$";
    $("#btn").click(function () {
      console.log("我是jQuery");
    });
  });
</script>
</body>
</html>